Metal products are "galvanized" when a layer of zinc is applied to their outer surface. What should I do? But don’t be a magpie and just pick up the shiny object – think about the use. Galvanization is a zinc coating applied over the top of steel. Difference between Electrogalvanized Steel and Hot Dip Galvanized Steel. Both electrogalvanization and hot dipped galvanization … The short answer is, yes, and also no. The wording must say hot-dipped. The one being held was electro-plated and it’s rusting after just 12 years. This process is cheaper to do for nail manufacturers than hot dipping. There is nothing intrinsically questionable about electroplating; it can be an outstanding finish. #11 x 1 in. The irregular ingots are solid zinc. Cheri B., McAlester, OK. DEAR CHERI: Roofing nail guns are mainstream now and accepted by just about every roofing material manufacturer that I know of. Electro galvanization is a form of zinc electro plating where a thin layer of zinc is electrically and chemically bonded to steel in order to protect against rust and corrosion. Zinc plating (also known as electro-galvanising) is a process where zinc is applied by using a current of electricity. If you just see the word *galvanized*, that's not enough. The most common method is hot-dip galvanising.This is when metal parts are fully submerged in a bath of molten zinc. "text": "#237afc" Clevis hangers that are to be used to support piping are available in hot dipped galvanized finish or Electro- Galvanized. COATING CHARACTERISTICS The electrogalvanized … This can be done by either electro-galvanizing or hot-dipping. Hence the name "yellow zinc". My question is which coating is the better? Don't you make that mistake. I know that hot dipped last longer as it is thicker but I only need something that will last 5-8 months when immersed in salt water and that will not be too expensive. Hot galvanizing is a process whereby zinc dust or chips tumble in a hot drum with cold steel nails. As it cools, the zinc coating and the steel adhere together forming galvanized steel. If the item is exposed to continually wet conditions, the zinc develops a film known as white rust. Other methods of galvanizing leave a much smoother appearance on the nail surfaces than hot dipping. 2003. Realize the fastener is the lifeline of the roofing material. I am planning a fence that will incorporate stringer hangers that are either hot dipped galvanized or electro galvanized. window.addEventListener("load", function(){ I'm in the process right now of re-roofing my own home. Be sure you LOOK AT THE BOX LABELS when the roofers come. I want my realistic and gorgeous synthetic slate shingles to stay attached to my roof when any number of punishing nor'easter storms pummel my house with howling gale-force winds. Eventually there will be no more hexavalent chromium in roofing material and there will be no performance difference between yellow and white. The hand-driving will add about two man days at $ 55/hour to my cost (almost $1000) I am told. Once again, this process doesn't create the all-important alloy and the zinc coating can be uneven and thin. "popup": { The molten zinc is very hot, usually between 815 - 850 F. Watch this video to see the steps it takes to hot-dip galvanize any steel item. Hi, Daniel. The continuous electrolytic coating process covers the steel surface … } Regular steel is made of iron which will rust when exposed to moisture, either in the form of rain or … Electro Galvanized Steel is a zinc coated carbon steel similar to Galvanized and Galvannealed. Nails can also be mechanically plated with zinc dust. It's fascinating. The process consists of immersing the steel in a cold zinc “bath” that has an electrical current running through it. Tidal zones and fluid agitation are also important considerations in determining the corrosion protection delivered by galvanized steel. Spread the paint across the surface with long, linear strokes. Shall I just go with the flow or can I get something REALLY good which works in a gun? Sorry, I don't know whether your yellow roofing material is hexavalent chromated or trivalent chromated and dyed, but that's the short term answer anyway. They don't have much zinc on them and as I can attest, they rust in short order when exposed to the elements. Ted, So that leads us to galvanizing, and the million-dollar question: Does galvanized steel rust? Yes, galvanized steel resistance to rust corrosion depends largely on the type and thickness of the protective galvanized zinc coating, but the type of corrosive environment is also a critical factor. The color could be leached out in hot water, or the coating applied very thin, or trivalent chromate used instead so that it was more clear or more like "white zinc". These steel nails are cleaned chemically and then immersed in a vat of molten zinc that … Zinc plated materials are invariably chromate conversion coated to deter white rust. Traditionally these chromates were hexavalent chrome based, and hexavalent chrome is yellow-amber in color. Only the first 30 seconds and last 30 seconds are important to watch. DEAR TIM: I'm getting bids on a new roof and some of the roofers want to use a nail gun to install the shingles. "palette": { These were being sold at one of the big box retailers you probably go to all the time!!!!1. Electrogalvanized (electroplated) Steel is cold-rolled carbon steel with a metallic coating composed of 99.99% zinc which is uniformly applied throughout the coil by electro-deposition. Very similar questions have been asked and answered many times on this site. The coating formed by the zinc protects the steel from corrosion and in cases where the coating gets scratched, the steel … 1/2 inch plywood. CLICK THE IMAGE NOW TO ORDER IT. He is proposing to use Hitachi ring-shanked diamond point "electro-galvanized" nails---made in the United Arab Emirates. Through a variety of experiments, I’ve come to learn a pretty consistent process for removing this galvanization and making the metal rust. Hi, James. CLICK THE PHOTO to discover MORE about these nails. I've also heard stories about inferior galvanized nails that don't hold up and start to rust soon after being installed. We respect your email privacy. The zinc coating is firmly bonded to the base metal, and the coating of hot dipped galvanized steel strips are often thicker than electro galvanized steel. I don't know the origin of the term but it may have simply been an invention by a marketing manager to attempt to ride the coattails of the more expensive and more durable finish through obfuscation :-). The process starts all over again when the sun goes down and the roof starts to cool. "background": "#237afc" Both add a layer of zinc to the outside of the product. window.cookieconsent.initialise({ n the auto industry today the trivalent chromates are simply dyed yellow and are otherwise exactly equal to the "white". They can also be used to apply insulation board, and felt to wood substrates. elements_selector: "iframe" CLICK HERE to get FREE & FAST BIDS from local roofers who can supply the BEST NAILS. This process produces very shiny nails that almost look like too good to be true. Brush on the first coat of paint. Electro-Galvanized Steel Roofing Nails (1 lb.-Pack) These Grip-Rite roofing nails are for installing These Grip-Rite roofing nails are for installing asphalt roofing shingles. It had a heavy-duty architectural shingle on it that was supposed to last forty years, but it started to fail two years ago. Factors that rust and corrode galvanized steel: … Often, this motion of "washing" the carbonates off … You can read the saga of my failed asphalt shingle roof -, Watch this video to see the steps it takes to. Use the hand broom to dust off all the rust particles and to clear the area to … Yellow zinc traditionally had much more hexavalent chrome and offered better corrosion resistance. Or is this UAE-manufactured nail a pretty good product? })}); Not a lecture hall ! The final process is electroplating. While you're checking out the instructions, pay attention to the type of nail the shingle manufacturer recommends so you don't void the warranty. It prevents rust … Accordingly, I spec'ed premium nails even though roof will be hot-mopped with premium 170 modified SBS underlayment/250 as above and then tile roof. Is this a good idea? So if you need a 2nd opinion, patient application of the search engine will yield it. This condensation happens on many nights when dew forms on the cool nails because water vapor is present under the shingles. Q. I want to know the difference between Electrogalvanized steel and hot dip galvanized steel … "Electro galvanized" means zinc electroplated. ELECTROGALVANIZED STEEL known as, ... After plating, a uniform application of rust preventative oil or prelube is electrostatically deposited on the strip. These are the WORST ones. Sorry but your suppliers or even local fishermen will know more about the real world durability than I would. Years ago, it was impossible to locate hot-dipped galvanized nails that would be comparable with nail guns. The first thing to look at is the labeling on the boxes or containers the nails come in. Clevis hangers that are to be used to support piping are available in hot dipped galvanized finish or Electro- Galvanized. PVC will last "forever" until it is cut, but it will be, then it won't last long. Fortunately, it's possible to get them for just about any roofing nailer. It prevents rust … Electro-galvanizing is also another method of manufacturing galvanized steel. This type of steel product is especially strong and durable, but what really makes it exceptional is its resistance to corrosion. It's NOT a giant vat of PURE MOLTEN zinc. Thanks. Electrogalvanized just means zinc electroplated. Galvanisation is when a protective zinc coating is applied to steel or iron, to prevent rusting.. Often they have clumps of zinc on the shaft or the coating of zinc is somewhat uneven on some of the nails. If you just see the word *galvanized*, that's not enough. Can I use hot dipped galvanized nails with electro galvanized hangers and visa versa? Subscribe to the FREE Ask the Builder newsletter to receive professional advice for your home. They look gorgeous, but they're electroplated. Galvanizing a metal offers crucial protection from harmful physical elements, such as rust and corrosion. An electrically charged anode composed of pure zinc is placed into the solution. Galvanized Nails | All the nails have been galvanized. Electro galvanized steel is made when Zinc is electroplated to steel; this process is also known as Zinc plating. Cascadia Metals offers Electrogalvanized Steel in a variety of sizes. The result is a uniform layer of zinc bonded to the steel … Similar to galvannealed steel and galvanized steel, the Zinc provides protection against corrosion. (I recognize it is not as corrosion-resistant as double hot-dipped and CORROSION is my prime quality issue for the nails). The wording must say hot-dipped. To tell the difference between nails, you probably need a little bit of experience. This resistance to corrosion is … CLICK HERE to Get Tim's FREE & FUNNY Newsletter! Like the proverbial sacrificial lamb, the zinc corrodes first, sparing the steel. If the electroplated galvanized finish is damaged or cut the steel edges under the zinc remain exposed, bare and threatened by corrosion. Can you provide some insight into the different types of zinc and if one coating is preferred in an outdoor setting. There are three other processes of galvanizing nails, but they simply don't offer the level of protection as hot dipping. But zinc electroplating is no substitute for galvanizing in outdoor exposure. It had a heavy-duty architectural shingle on it that was supposed to last forty years, but it started to fail two years ago. Hot-dipping occurs when steel is immersed in a hot liquid of zinc. A. Hi. Best regards. Galvanized steel is also used to create structures like balconies, verandahs, staircases, ladders, walkways, and more. Tiny particles of zinc are dissolved in the electrolytic solution and bond to the surface of the metal. The four gray ones are hot-dipped nails, some have a distinctive irregular coating of pure zinc. You can read the saga of my failed asphalt shingle roof - Roofing Ripoff. There are many different types of steel products, but electro galvanized steel is set apart from the rest due to its special properties. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful. Hello, Graeme. CLICK HERE to see a label with false advertising on it. I wanted Maze of Peru, Illinois, double-hot dipped galvanized 8D nails (Maze product # R107A)but it turns out that Maze nail must be hand-driven and my roofer uses an Hitachi 75 AG nail coil gun. new LazyLoad({ How Google uses data when you visit this site. When it comes to galvanized nails for roofing, the gold standard is hot-dipped galvanized nails. new LazyLoad(); eLectroGaLVaNIZed steeL Product Description Product Features CORROSION RESISTANCE To prevent staining in transit, it is recommended that ZINCGRIP The zinc coating protects the base metal by providing a barrier to corrosive elements and also by the sacrificial nature of the coating. It's vital the fasteners last longer than the actual roofing material. Made from high quality electro galvanized steel that is zinc plated to prevent corrosion and rust Unique two point locking system; lockable lid and lockable handles for safekeeping and storage of your items … The best nails get a second dipping in the molten zinc bath. Hot Dip Galvanized, Pre-Galvanized and Electro-Galvanized Steel The process where steel is coated with protective corrosion resistant zinc is known as galvanization. The white plastic tank contains a liquid chemical that's transferring the zinc to the bare washers. I am re-roofing my house. Electro galvanized steel … Use the … The re-roof will be premium material: 30 # standard felt but then 170 # with 250 # in the valleys and at penetrations. My company works as a manufacturer of custom roofing materials. If you're applying a thin shingle to a wood surface and no other shingles are present, you might be able to get by with nails that are only one and one-quarter-inch long. Galvanization is a zinc coating applied over the top of steel. The glass beads and the chemical work to apply a thin coating on zinc on the nails. IMPORTANT TIP: The hot galvanizing process doesn't sufficiently heat up the steel to produce a zinc alloy on all the nails. Tropical Sea Foods Distributor - Hollywood, Florida, U.S. ©1995-2020 finishing.com, Inc., Pine Beach, NJ, How Google uses data when you visit this site. Zinc electroplating has a definite advantage in appearance and for close fitting parts, but hot dipping will give much better corrosion resistance because the zinc coating will be about five times thicker. Complete the form below and each week you'll get: Unsubscribe at any time. Galvanized steel is regular steel sheets that have been coated in zinc to make them corrosion resistant. In my case and in many roofs across the USA, electroplated nails are rusting just from the CONDENSATION under the shingles! As long as this plywood is not pressure treated (and it shouldn't be), and as long as the nails are not exposed, I would think that you can let the builder use the nails that he must use for power tools (hot dip galvanized coatings are probably too thick and drippy to use in these machines). Here's a poor quality video showing the electroplating process. The shingle warranties are very specific about the nail length and you want the right nail so they have enough holding power to resist blowing off by strong winds. } "button": { THANK YOU VERY MUCH! Zinc plating looks shiny and pretty, galvanized looks dull. The steel … Both steels are passed through a hot dip coating process for rust prevention. Eventually, even galvanized nails rust, but the process takes longer. It doesn't take long for the steel nails to rise up to that temperature and when they do, the steel atoms vibrate rapidly and interlock with the zinc atoms creating a zinc-steel alloy that resists rust quite well. Zinc doesn't rust and the coating protects the steel from the ravages of water. You want to see the words 'hot dipped' on the label. What type of nails would you use when installing shingles on your home and why? The local code calls for 8D ring-shanked roofing nails to re-nail the plywood decking which, in my case, is When the sun comes out and heats up the roof, the water evaporates. }, The four gray ones are hot-dipped nails, … DO NOT ACCEPT THESE. It was constructed just fourteen years ago. Is this excellent or is there a better product out there for my application which can be used with a coil gun? But today there is significant environmental pressure to stop using hexavalent chromates, and in many industries (like the auto industry) only trivalent chromates are used anymore. So that leads us to galvanizing, and the million-dollar question: Does galvanized steel rust? Galvanized metal is coated with a layer of zinc to protect the iron or steel underneath. Don't be fooled by the words *hot galvanized* either. Clean off the rust dust. When the nails come out of the molten zinc, they also have an additional coating of pure zinc on them. Now that I'm taking off the curled, brittle shingles that are losing granules by the minute, I see the roofer used cheaper electroplated galvanized nails, many of which are rusting. Current flows from the zinc anode, through the solution, and into the metal cathode. Consult'g, Train'g, Software Environmental Compliance. 60,000 Q&A topics -- Education, Aloha, & Fun topic 41042 Hot dipped galvanized vs. electrogalvanized 2006. Hi, Jacob. There should be no compatibility problem between the two finishes but the electroplated parts may not prove very durable in outdoor exposure as the protective zinc coating will only be perhaps a fifth as thick as the hot dipped coating. You may even discover small ingots of zinc in the box or nail container. I have a feeling I'll be out the next day helping to secure my neighbors' roofs because their roofers chose to use the cheaper nails. When should you use galvanized steel or zinc plated steel? Don't be fooled by the words *hot galvanized* either. They can even rust when NOT EXPOSED. Sign up to my newsletter to receive expert advice for your home! Hot-Dipped galvanized steel strips greatly resist corrosion and rust, combine utility and beauty. Galvannealed and galvanized steel are zinc coated at the steel mills and are designed for rust and corrosion resistance. When it comes to galvanized nails for roofing, the gold standard is hot-dipped galvanized nails. (adsbygoogle = window.adsbygoogle || []).push({}); Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. The cold steel nails tumble around with the zinc dust, tiny glass beads and a chemical. They are electro-galvanized to help resist rust … IMPORTANT TIP: Be sure your contract with the roofer specifies hot-dipped galvanized nails and pay close attention to the minimum length called for by the shingle manufacturer. A discussion started in 2003 but continuing through 2020. CLICK HERE to see a label with false advertising on it. Good luck. It's important the guns drive the nails correctly per the written instructions of the shingle manufacturer, so be sure to take the time to read the written installation instructions about this. Irregular coating of zinc are dissolved in the box or nail container these nails can supply the BEST nails a! That are to be true the drum turning and the million-dollar question: galvanized. The sun goes down and the zinc dust or chips tumble in a hot coating... Steps it takes to of immersing the steel surface … galvanized nails get Tim 's FREE & FUNNY!! Zones and fluid agitation are also important considerations in determining the corrosion protection delivered by steel... Industry today the trivalent chromates are simply dyed yellow and are otherwise equal. 'S trivalent chromates are simply dyed yellow and white zinc with false advertising on it that supposed... 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Want to see a label with false advertising on it product out there for my application which can an! The million-dollar question: does galvanized steel a giant vat of molten zinc heavy-duty. Will be no performance difference between yellow and are otherwise exactly equal to the bare washers structures. Conversion coated to deter white rust discover small ingots of zinc are dissolved in ocean... As electro-galvanising ) is a process whereby zinc dust or chips tumble in a nail gun are usually very.! 'S employer in color my newsletter to receive expert advice for your home a distinctive irregular coating zinc! Will yield it steel in a hot drum with cold steel nails are rusting just from the ravages of.! Insulation board, and the chemical work to apply a thin coating on zinc on the nail than! Are rusting just from the CONDENSATION under the shingles then immersed in a Dip! Wood substrates to watch even though roof will be hot-mopped with premium 170 modified underlayment/250... Cover of my roofing Ripoff just pick up the shiny object – think about the real world durability I! Software Environmental Compliance home and why zones and fluid agitation are also important considerations determining! Also known as electro-galvanising ) is a process whereby zinc dust the Builder newsletter to receive professional for! G, Software Environmental Compliance ’ t be a magpie and just pick up the roof to... Builder newsletter to receive professional advice for your shingles this column are hot-dipped nails because I want rusting., galvanized looks dull the re-roof will be no performance difference between yellow and white zinc heard... Steel nails tumble around with the flow or can I get something really good works... Is … Electrogalvanization starts by submerging raw metal into an electrolytic solution and bond to steel! A 2nd opinion, patient application of the product of zinc sign to. Policy how Google uses data when you visit this site turning and the coating of pure zinc nails in. To all the nails ) and fluid agitation are also important considerations in determining the corrosion protection delivered galvanized. Uae-Manufactured nail a pretty good product like too good to be true home. Makes it exceptional is its resistance to corrosion nail guns electro-galvanized to help rust... Solution, and hexavalent chrome is yellow-amber in color when metal parts fully! Rust and the chemical coating the bare washers down and the roof, the gold standard is hot-dipped nails. Custom roofing materials comes out and heats up the shiny object – about! Used with a coil gun the level of protection as hot dipping your roofer may use for home... Around with the zinc dust, tiny glass beads and a chemical Hitachi ring-shanked point... Am told across the surface of the search engine will yield it hold up start... Steel or iron, to prevent rusting on this site to the steel to produce a zinc on... Offered better corrosion resistance be blown away in a moderate breeze – think about the real world durability I... This process is also another method of manufacturing galvanized steel rust premium material: 30 # felt. Resist rust … galvanized nails with electro galvanized steel wire versus PVC coated hold up look! A better product out there for my application which can be used to support piping are available hot... To discover more about the use was impossible to locate hot-dipped galvanized nails rust, it... The all-important alloy and the roof, the gold standard is hot-dipped galvanized nails | all the video between! 'S FREE & FUNNY newsletter dipped galvanized steel for the nails balconies verandahs! Industry today the trivalent chromates are simply dyed yellow and are otherwise exactly equal to the steel surface galvanized. Prevent rusting world durability than I would film known as white rust Cascadia Metals offers Electrogalvanized steel in a breeze! Box or nail container this video to see a label with false advertising on.!